rms 1. A balanced three-phase, star-connected voltage source has VRN =230 Z60° N V with RYB phase sequence, and it supplies a balanced delta-connected three-phase load. The total power drawn by the load is 15 kW at 0.8 lagging power factor. Find the line currents, load and phase currents. 2. A balanced star-connected load is supplied from a symmetrical 3-phase, 440 V; 50 Hz supply. The current in phase is 20 A and lags its respective phase voltage by an angle 40°. Calculate (a) load parameters, (b) total power, and (c) readings of two wattmeters in load current to measure total power.

rms 1. A balanced three-phase, star-connected voltage source has VRN =230 Z60° N V with RYB phase sequence, and it supplies a balanced delta-connected three-phase load. The total power drawn by the load is 15 kW at 0.8 lagging power factor. Find the line currents, load and phase currents. 2. A balanced star-connected load is supplied from a symmetrical 3-phase, 440 V; 50 Hz supply. The current in phase is 20 A and lags its respective phase voltage by an angle 40°. Calculate (a) load parameters, (b) total power, and (c) readings of two wattmeters in load current to measure total power.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.13MCQ

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